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- Mar 12th 2006, 11:20 AM #1

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- Mar 12th 2006, 05:12 PM #2

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Originally Posted by**Jon**

He needs to be selected AND he would be the first. The probability that he is selected is

The probability that he is first is thus, the answer is

Wishbone:

Same thing as in the first problem, same answer.

Bashful is first, Happy is last:First they need to be selected out of 6 people which is

Now bashful is first which is and hapy is last which is because only 3 poeple remain after bashful. Thus,

For the next problem, you need to select all 4 which is , Now you need them is proper order which is for the first one for the second for the third and for the last Thus,

Sleepy Not last: Add that he is first or second or third. Which is as in the first problem. Thus,

Wishbone not selected: If the probability of selecting him is then the probability of not selecting him is

Hope this helps, and also that I did not erred.

- Mar 12th 2006, 05:18 PM #3

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- Mar 12th 2006, 07:10 PM #4

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